/// Creates a spinning transition by rotating the element. The `turn` unit is used to specify how far to rotate. `1turn` is equal to a 360-degree spin.
/// @param {Keyword} $state [in] - State to transition to.
/// @param {Keyword} $direction [null] - Direction to spin. Should be `cw` (clockwise) or `ccw` (counterclockwise). By default `cw` and `ccw` for `in` and `out` states respectively.
/// @param {Number} $amount [0.75turn] - Amount to element the element.
/// @param {Boolean} $fade [false] - Set to `true` to fade the element in or out simultaneously.
/// @param {Duration} $duration [null] - Length (speed) of the transition.
/// @param {Keyword|Function} $timing [null] - Easing of the transition.
/// @param {Duration} $delay [null] - Delay in seconds or milliseconds before the transition starts.
@mixin mui-spin(
  $state: in,
  $direction: cw,
  $amount: 0.75turn,
  $fade: map-get($motion-ui-settings, spin-and-fade),
  $duration: null,
  $timing: null,
  $delay: null
) {
  $direction: if($direction != null, $direction, if($state == in, cw, ccw));
  $spin: spin($state, $direction, $amount);

  @include transition-start($state) {
    @include transition-basics($duration, $timing, $delay);
    @include -mui-keyframe-get($spin, 0);

    @if $fade {
      transition-property: transform, opacity;
      opacity: if($state == in, 0, 1);
    } @else {
      transition-property: transform, opacity;
    }
  }

  @include transition-end($state) {
    @include -mui-keyframe-get($spin, 100);

    @if $fade {
      opacity: if($state == in, 1, 0);
    }
  }
}
